Subcategories

Modern Western (IAU)

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Citation Formats

General Reference

Divinity Atlas. "Modern Western (IAU)." Accessed August 30, 2026. https://dev-divinity.interactiveatlas.org/subcategories/constellation/modern-western-iau.

APA Style

Divinity Atlas. (n.d.). Modern Western (IAU). Retrieved August 30, 2026, from https://dev-divinity.interactiveatlas.org/subcategories/constellation/modern-western-iau

BibTeX

@misc{divinityatlas-modern-western-iau,
  author = {Divinity Atlas},
  title = {Modern Western (IAU)},
  year = {2026},
  url = {https://dev-divinity.interactiveatlas.org/subcategories/constellation/modern-western-iau},
  note = {Accessed August 30, 2026}
}

The eighty-eight constellations with boundaries formally fixed by the International Astronomical Union in the 1920s, the standard modern astronomy now uses worldwide. The IAU set reorganised and extended the classical forty-eight constellations of Ptolemy's Almagest into fixed regions of sky with straight boundary lines, so that every point in the sky belongs to exactly one constellation, a scientific convention rather than a mythological figure traced between stars.

Facts